Install Instructions
PI-PR-561147 0312 (Diverting Valve) 5 of 9
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Product
Instructions
Piping Schematic of Basic Heating Control with Mixing Station, 3 Manifolds in Parallel and High Temp
with Powerheads and Boiler Relay
NOTES: Piping
1. This drawing shows system piping concept only. Installer is responsible for all equipment & detailing required by local codes.
2. Size header piping for maximum ow velocity of 2 ft. / sec.
3. All other piping should be sized for a maximum ow velocity of 4 ft. / sec.
4. Install a minimum of 12 diameters of straight pipe upstream of all circulators and check valves.
5. Install isolating anges or isolating valves on all circulators.
6. Install purging valve(s) on all circuits.
7. All closely spaced tees shall be within 4 pipe diameter center to center spacing.
8. Install minimum of 6 pipe diameters of straight pipe upstream and downstream of all closely spaced tees.
9. Differential pressure bypass valve prevents ow noise under partial load conditions (some zone valves closed).
10. Set differential pressure bypass valve to delta P of distribution system with all zones open + 1 psi
11. Not all components may be required depending on control strategy (i.e. constant circulation).